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CR is carriage return, LF is line feed, BEL is the bell character which rang a small bell (often used to alert operators to an incoming message), SP is space, and NUL is the null character (blank tape). Note: the binary conversions of the codepoints are often shown in reverse order, depending on (presumably) from which side one views the paper ...
\r carriage return \t tab \b backspace \f form feed \v vertical tab (Internet Explorer 9 and older treats '\v as 'v instead of a vertical tab ('\x0B). If cross-browser compatibility is a concern, use \x0B instead of \v.) \0 null character (U+0000 <control-0000>) (only if the next character is not a decimal digit; else it is an octal escape ...
Touchmaster Five with carriage return lever at left. Originally, the term "carriage return" referred to a mechanism or lever on a typewriter.For machines where the type element was fixed and the paper held in a moving carriage, this lever was on the left attached to the moving carriage, and operated after typing a line of text to cause the carriage to return to the far right so the type ...
Often, it will also cause a carriage return. The form feed character code is defined as 12 (0xC in hexadecimal ), and may be represented as Ctrl + L or ^L . In a related use, Ctrl + L can be used to clear the screen in Unix shells such as bash , or redraw screen in TUI programs like vi/emacs.
Another is Mathematica, where the Return key creates a new line, while the Enter key (or Shift-Return) submits the current command for execution. Historically, many computer models did not have a separate keypad, and only had one button to function as Enter or Return. For example, the Commodore 64 (manufactured from 1982) had only the "Return ...
The Xterm terminal emulator. In the early 1980s, large amounts of software directly used these sequences to update screen displays. This included everything on VMS (which assumed DEC terminals), most software designed to be portable on CP/M home computers, and even lots of Unix software as it was easier to use than the termcap libraries, such as the shell script examples below in this article.
At the same time, however, it restricts the use of C0 and C1 control characters other than U+0009 (Horizontal Tab), U+000A (Line Feed), U+000D (Carriage Return), and U+0085 (Next Line) by requiring them to be written in escaped form (for example U+0001 must be written as  or its equivalent). In the case of C1 characters, this restriction ...
The computer can issue the "ATO" command to return to data mode. The computer instructed the modem to terminate the call by setting the Data Terminal Ready (DTR) pin to an "off" state. The DTR pin is usually how computers invoke the termination of a modem call nowadays.